Reducing The Complexity Of Sub-band ADPCM Coding
[ Source: APTX ]
February 2009-
The number of consumer audio applications demanding high-quality audio compression and communication across wireless networks continues to grow. Although the consumer is increasingly demanding higher audio quality, devices such as portable media players and wireless headsets also demand low computational complexity, low power dissipation, and practical transmission bit-rates to help conserve battery life. This paper discusses research undertaken to lower the complexity of existing high-quality sub-band ADPCM coding schemes to better satisfy these conflicting criteria.
apt-X Lossless For Lossless Audio Compression
[ Source: APTX ]
January 2009-
This technology white paper introduces a new scheme for lossless audio compression called apt-X Lossless. This scheme has been conceived, designed, and developed by APTX, an audio processing technology company, the commercial originator of the apt-X low-latency audio codec, and a company with a long association with both the broadcast industry and the studio post-production business.
Kleer Advantages Over Bluetooth
[ Source: Kleer ]
April 2008-
This whitepaper compares Kleer technology to Bluetooth technology for the application of wireless streaming audio. Bluetooth is a standard for relatively short-range general-purpose data communications. Bluetooth has found initial market success in wireless voice headsets for mobile phones and is now trying to address stereo audio for mobile phones and portable audio players. Bluetooth solutions suffer from poor audio quality due to the use of lossy audio compression, poor ISM (2.4GHz) band coexistence performance in ...
Security Associations in Personal Networks: A Comparative Analysis
[ Source: Nokia ]
January 2008-
Short-range communication standards have brought a large number of new services to the reach of common users. For instance, standards for personal networking technologies such as Bluetooth, Wi-Fi,Wireless Universal Serial Bus (WUSB), and HomePlug AV enable users to easily introduce, access, and control services and devices both in home and mobile environments. The initial process of introducing a new device to another device or to a network is called an association. This Nokia paper ...
Bluetooth PAN and External IP Networks
[ Source: University of Oslo ]
January 2008-
This paper discusses how ad-hoc Personal Area Network (PAN) based on Bluetooth technology may connect to external networks. The paper assumes that the Bluetooth network (piconet) is formed by the automatic SAPIFO procedure that one or more piconet devices have access to external networks, and that IPv4 is used for external communication. Bluetooth have specified a PAN profile for IP over Bluetooth, which uses BNEP (Bluetooth Network Encapsulation Protocol) to emulate an Ethernet segments between ...
Simple Pairing White Paper
[ Source: Bluetooth ]
January 2008-
The primary goal of simple pairing is to simplify the pairing process from the point of view of the user. Secondary goals are to maintain or improve the security in Bluetooth wireless technology. Since high levels of security and ease-of-use are often at opposite ends of the spectrum in many technologies and products, much care has been taken by the Core Specification Working Group in the creation of the Simple Pairing proposal to maximize security ...
Coexistence Analysis of Bluetooth and Cellular UMTS in the 2500-2690 MHz Band
[ Source: Ericsson ]
January 2008-
The 2500-2690 MHz band has been recognized as extension band for IMT-2000 systems such as UMTS (Universal Mobile Telecommunications System). The combination of BT and GSM within one mobile phone has become widely accepted and therefore the same combination is required to work for UMTS mobile phones operating in the 2.5 GHz extension band as well. The objective of the work explained in this white paper is to analyze the performance of the BT receive mode ...
Recognition Green Light for Bluetooth
[ Source: Jupitermedia ]
January 2008-
It started out as the little technology that could. Today, more people than ever are using the short-range Bluetooth wireless mode of communication to switch files and talk on phones using headsets and earpieces. Since the technology is fundamentally designed to replace cables, users rely on it to wirelessly print from their notebooks or handheld PCs and connect to other devices such as LCD projectors. Bluetooth awareness increased the most in the U.S, where ...
Palm Mobility Series: Bluetooth Wireless Technology - Connecting Devices Wirelessly With Bluetooth Wireless Technology
[ Source: Palm ]
January 2008-
Bluetooth technology is a set of disclaimers that allow devices to talk to other devices, or to accessories, wirelessly over short distances. Bluetooth technology allows devices to communicate with each other without cables. As of the writing of this paper (Fall 2005), Bluetooth technology is being used in significant numbers by cell phone manufacturers to do things like connect a hands-free headset to a mobile phone or connect a mobile phone to a computer. This paper ...
The Quest for Low Cost, Ultra Low Power Wireless Networks for Smart Environments
[ Source: Ambient Systems ]
January 2008-
Sensors and control devices, that can measure anything from temperature to air flows, have found their way into a wide range of applications, such as environmental monitoring, agriculture, security and in factories. Emerging wireless communication solutions, with incorporated mesh networking capabilities, are the ideal platform for a wide array of low-cost, low data rate applications. This paper explains unconventional technologies including a new approach provided by Ambient Systems that really overcomes these barriers. Systems designers ...